6 Andre is thinking through a proof using a reflection to

Last updated: 5/16/2023

6 Andre is thinking through a proof using a reflection to show that a triangle is isosceles given that its base angles are congruent Complete the missing information for his proof B Construct AB such that AB is the perpendicular bisector of segment CD We know angle ADB is congruent to 2 1 DB is congruent to is congruent to angle since AB is the perpendicular bisector of CD because they are both right 3 6 Angle angles Triangle ABC is congruent to triangle Congruence Theorem AD is congruent to 4 5 because of the Triangle because they are corresponding parts of 7 congruent triangles Therefore triangle ADC is an isosceles triangle